A photo posted to Twitter shows massive lines at JFK Airport amid a computer glitcTwitter/Sasha McLennan

A computer outageat JFK airport created check-in delays and long lines Sunday into early Monday, NBC New York reported.

A Verizon server providing internet service inTerminal 7 experienced problems at around 4 p.m., said PortAuthority of New York and New Jersey spokesman Neal Buccino. The outage required manual check-ins.

At one point Sunday evening, more than 1,000 passengers were waiting to check in. Other reports estimate this number grew to 1,500.

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A photo posted to Twitter shows check-in lines extending out into the sidewalks.

Qantas,a partner of British Airways, operates Terminal 7 and leases space to other carriers. Buccino said passengerswere orderly and that British Airways made regular announcements.

The New York Timesreported Monday morning that operations are expected to return to normal in Terminal 7.